EP2367093A1 - Mit einer punktmusterlesefunktion ausgestattete maus - Google Patents

Mit einer punktmusterlesefunktion ausgestattete maus Download PDF

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Publication number
EP2367093A1
EP2367093A1 EP09825939A EP09825939A EP2367093A1 EP 2367093 A1 EP2367093 A1 EP 2367093A1 EP 09825939 A EP09825939 A EP 09825939A EP 09825939 A EP09825939 A EP 09825939A EP 2367093 A1 EP2367093 A1 EP 2367093A1
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EP
European Patent Office
Prior art keywords
dot pattern
mouse
reading
information
medium surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09825939A
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English (en)
French (fr)
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EP2367093A4 (de
Inventor
Kenji Yoshida
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Individual
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Individual
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Publication date
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Publication of EP2367093A1 publication Critical patent/EP2367093A1/de
Publication of EP2367093A4 publication Critical patent/EP2367093A4/de
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03543—Mice or pucks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/0304—Detection arrangements using opto-electronic means
    • G06F3/0317—Detection arrangements using opto-electronic means in co-operation with a patterned surface, e.g. absolute position or relative movement detection for an optical mouse or pen positioned with respect to a coded surface
    • G06F3/0321—Detection arrangements using opto-electronic means in co-operation with a patterned surface, e.g. absolute position or relative movement detection for an optical mouse or pen positioned with respect to a coded surface by optically sensing the absolute position with respect to a regularly patterned surface forming a passive digitiser, e.g. pen optically detecting position indicative tags printed on a paper sheet

Definitions

  • the present invention relates to an information input device capable of reading a dot pattern arranged on a medium, and accurately handling absolute coordinates.
  • a mouse has been known as auxiliary input means for controlling a pointer and a cursor displayed on a monitor connected to an information processing apparatus such as a personal computer.
  • the mouse is moved forward and backward and rightward and leftward by a user on a plane such as a mouse pad, and inputs a signal conforming to a movement distance/direction of this relative position to the information processing apparatus.
  • Means for detecting a two-dimensional relative movement distance of the mouse includes mechanical means using a rotary encoder and optical means for reading a change of a surface of the mouse pad or the like with infrared rays. Both the means input relative position information relating to a movement distance/movement direction of the mouse from a detected amount of change of XY coordinates to the information processing apparatus, to control movements of the pointer and the cursor on the monitor.
  • Non-Patent Literature 1 Known as a mouse serving as an auxiliary input device for the information processing apparatus has been one provided with a barcode reader (Patent Literature 1).
  • the barcode reader is one of scanners capable of reading a code value defined in a barcode.
  • a scanner capable of reading a dot pattern for example, in addition to a barcode as a reading object has also been devised in recent years (Patent Literatures 2 and 3).
  • a scanner for reading a dot pattern a scanner having a configuration in which position information (XY coordinate values) relating to a reading position, together with code value information, can be read has been devised (Non-Patent Literature 1).
  • the auxiliary input means for controlling the pointer and the cursor includes a pen tablet.
  • a pen tablet In the pen tablet, an absolute position is designated on an operation plate corresponding to a screen, which is suitable for detailed work.
  • the pen tablet is so big and heavy as to require a fixed work area on a desk, and therefore lacks in convenience.
  • the present invention is directed to providing an auxiliary input system capable of accurately inputting an absolute position and/or a code value even in a configuration in which an auxiliary input device such as a mouse covers a pattern surface.
  • a dot pattern in which a code value and/or XY coordinate values is/are defined on a medium surface can be used with a high degree of freedom because a user can optionally design a work area and an operation instruction item using an information processing apparatus and a printer.
  • a barcode reader-equipped mouse has a problem that, because it has a barcode reader installed near the center of its bottom surface, and a barcode is covered with a main body of the mouse when read, a user cannot match the barcode reader with a code position which he/she desires to have the barcode reader accurately read.
  • the pen tablet or the like has a problem that it has a special configuration in which a pen-type device and a plate-shaped device are combined with each other, and is therefore bigger, heavier, and less convenient.
  • An information input device (a grid mouse) according to the present invention has been provided in view of these points, and has its technical problem to have a mouse function of being able to input relative position information and a function of being able to input absolute position information and enable a user to accurately designate a reading position of a code by visual recognition.
  • the present invention uses the following means.
  • a dot pattern for example, GRID 1 and GRID 5, described in detail below, in which a code value and/or XY coordinate values can be defined as code information and which has direction information is suitable.
  • the present invention is not limited to this.
  • code information is found by image analysis, a dot pattern the direction of which can be determined as a result can also be used.
  • the predetermined position on the medium surface is a position on a medium surface pointed to by the position designation means and is a position to be measured as XY coordinate values in a coordinate system on the medium surface.
  • a position of the reading hole and the predetermined position on the medium surface designated by the position designation means are shifted so that a user can input the predetermined position designated by the position designation means while completely visually recognizing the predetermined position.
  • an information input device capable of accurately inputting absolute coordinates of a point position only by using the information input device and a medium such as paper, a mouse pad, or a transparent sheet having a dot pattern provided thereon. This eliminates the necessity of having a configuration in which a pen-type device and a plate-shaped device are combined with each other, like in a pen tablet generally used when absolute coordinates are input.
  • control unit in the input device performs calculation processing.
  • a main body of an information processing apparatus may perform the calculation processing.
  • the position designation means can accurately designate a position that the user attempts to designate.
  • the prism including the dot pattern input unit is used for the information input device so that refraction and total reflection of light in the prism can be used.
  • an optical path can be freely changed. Therefore, a free arrangement design of members in an internal configuration of the information input device, including transverse arrangement of the reading unit, is enabled
  • the above-mentioned information input device includes a mouse, a digitizer, and a tablet.
  • the position of the reading hole and the predetermined position on the medium designated by the position designation means are shifted so that a code or the like is not covered with a main body of the mouse or the like during reading.
  • the dot pattern reading unit has a function of an optical reading unit for detecting a movement amount and a direction of an optical mouse in addition to a function of reading the dot pattern, and the control unit also analyzes the change of the image read per unit time by the dot pattern reading unit in addition to calculating the predetermined position.
  • the dot pattern need not be provided on the medium surface in the claim.
  • a coordinate input device capable of inputting absolute coordinates only by using a grid mouse (an information input device) according to the present invention and a medium such as paper or a transparent sheet having a dot pattern provided thereon. This produces an effect of being able to provide an absolute coordinate input device, which is simple and highly convenient.
  • a reading position and a target visually recognized by a user are shifted so that the user can read any coordinate position while completely visually recognizing the target. This produces an effect of the user being able to accurately perform input work.
  • Total reflection of a prism is used, to produce an effect of enhancing a degree of freedom of arrangement positions of members in a mouse.
  • a first embodiment of a mouse according to the present invention will be described below with reference to Figs. 1 to 16 .
  • the present invention will be first described by an example of use to easily grasp its content.
  • Fig. 2 illustrates an example of use of a mouse 1 according to the present embodiment.
  • Fig. 2 (a) illustrates how the mouse 1, together with a book 2, is used
  • Fig. 2 (b) illustrates how the mouse 1, together with a grid pad 3, is used
  • Fig. 2 (c) illustrates how the mouse 1, together with a grid sheet 3b, is used.
  • a picture 4, a map 5, and so on are printed on a space of the book 2.
  • a dot pattern 6 (described below) using a grid as a basis is overlaid and printed on the picture 4 and the map 5.
  • the dot pattern 6 enables a code value and/or XY coordinate values to be defined.
  • a predetermined code value is embedded in the picture 4, and a particular code value and XY coordinate values are embedded in the map 5.
  • the mouse 1 enables switching between a mouse mode in which it functions as a normal mouse and a dot pattern reading mode (hereinafter referred to as a grid mode) in which the dot pattern 6 can be read.
  • the modes may be switched by a switch dedicated to mode switching to be provided in the mouse 1 or simultaneously long-pressing right and left buttons in the mouse 1 (continuing to press the right and left buttons for approximately three seconds).
  • the modes may be switchable in response to a signal from an information processing apparatus.
  • the grid mode can be used by being subdivided into a mode using only XY coordinates defined in the dot pattern 6, a mode using only a code value, and a mode using both XY coordinate values and a code value depending on setting by a user or a program for a control device.
  • a map 5 on which a particular location is displayed in enlarged fashion is displayed on a screen 8 of an information processing apparatus 7, the user brings the mouse 1 into a grid mode, to put the mouse 1 on the map 5, match a target position with a target 50 (position designation means), described below, while viewing the target position, and click the left button. Consequently, a medium and a map, on which dots are printed, are specified by a code value, and a location on the map is determined by XY coordinate values. By the input information, the map on which the designated location is enlarged can be used as displayed on the screen 8.
  • the mouse 1 together with the grid pad 3 having the dot pattern 6 representing XY coordinate values printed thereon, is used.
  • the user uses the mouse 1 after bringing the mouse 1 into a grid mode, to put the mouse 1 on the grid pad 3 and perform calibration processing for matching four corners of the grid pad 3 and four corners of a monitor using a method generally performed as initial setting. After the calibration processing, an absolute position is input using the grid pad 3.
  • a mouse pad itself can be allocated a code value, and input management of a user, a date, and so on can be performed using the mouse pad.
  • a method using the mouse 1 as a digitizer is illustrated.
  • a transparent sheet provided with the dot pattern 6 in which at least XY coordinate values are defined (hereinafter referred to as a grid sheet 3b) is overlaid on the figure 9 to be digitized, a dot and a line on the figure 9 are designated while being viewed over the grid sheet 3b, and the graphic information is input.
  • CAD computer-aided design
  • the dot pattern 6 in which XY coordinate values are defined can also be directly printed using an inkjet printer or the like on the figure 9 and digitized in addition to a method for overlaying the grid sheet 3b on the figure 9 .
  • the mouse 1 When switching means switches the mouse 1 to a mouse mode even in any way of use, the mouse 1 can be used as a normal mouse.
  • input information relating to functions of a general mouse i.e., a left button operation, a right button operation, a wheel operation, and a position movement amount can be sent to the information processing apparatus.
  • Fig. 3 illustrates an example of a configuration of the mouse 1.
  • Fig. 3 (a) is a cross-sectional view of the mouse 1 having a mechanical mouse function
  • Fig. 3 (b) is an enlarged sectional view of the dot pattern reading unit 10
  • Fig. 3 (c) is an enlarged sectional view of a movement amount/direction detection unit 20b serving as an optical reading unit in a mouse 1b having an optical mouse function.
  • the mouse 1 includes a movement/direction detection unit 20, a button 30, a button operation detection unit 31, a wheel 32, a wheel operation detection unit 35, a control unit 60, and a sending unit 65 for implementing a normal mouse function.
  • a function of each of the units for implementing the mouse function is similar to that in a normal mouse, and hence the description thereof is omitted.
  • the mouse 1 further includes a dot pattern reading unit 10, an infrared light emitting diode (IR-LED) 11 serving as dot pattern irradiation means, an extension unit 40, and a target 50 (position designation means), which are used in a grid mode.
  • IR-LED infrared light emitting diode
  • the dot pattern reading unit 10 will be described below.
  • the target 50 is provided as the position designation means in the extension unit 40, and is used to be accurately matched, when the user designates a predetermined position on a medium using the mouse 1, with the predetermined position by viewing.
  • the extension unit 40 is used to arrange the target 50 outside a main body of the mouse 1, and is provided in a shape projecting by a little less than 1 cm forward from the main body of the mouse 1, for example.
  • the extension unit 40 may desirably be transparent or translucent so that the predetermined position on the medium and the target 50 are matched with each other by seeing through the extension unit 40.
  • the target 50 may desirably be provided on a lower surface of the mouse 1 so that it is not shifted from a viewing position depending on the thickness of the extension unit 40.
  • mode switching is performed by long press of right and left buttons in the mouse 1, and a dedicated switch is not provided.
  • Fig. 3 (b) illustrates details of an example of the dot pattern reading unit 10.
  • the dot pattern reading unit 10 includes an IR-LED 11, a reading hole 12, a lens 13, an infrared (IR) filter 14, a complementary metal oxide semiconductor (CMOS) sensor 15, and a Printed Circuit Board (PCB) 16.
  • IR infrared
  • CMOS complementary metal oxide semiconductor
  • PCB Printed Circuit Board
  • the IR-LED 11 is an LED for emitting infrared rays.
  • a medium on which the mouse 1 is put is irradiated with the infrared rays emitted from the IR-LED 11 through the reading hole 12 provided at the bottom of the mouse 1.
  • the medium includes a grid pad 3, a picture 4, a map 5, and a grid sheet 3b.
  • the infrared rays reflected from the medium are detected as an image including a dot pattern in the CMOS sensor 15 after passing through the reading hole 12, the lens 13, and the IR filter 14.
  • the detected image is sent to the control unit 60.
  • the reading hole 12 is circular in shape, for example.
  • the reading hole 12 may have a diameter in which an image can be appropriately captured in the CMOS sensor 15, e.g., a diameter of approximately 4 mm.
  • the shape of the reading hole 12 may be a rectangle having a similar area.
  • the PCB 16 is used to hold each of the units and couple the units.
  • infrared rays are used to read the dot pattern.
  • the IR filter 14 for removing components other than an infrared component is used so that the dot pattern can be appropriately read even if light reflected from the medium includes the component other than the infrared component.
  • This example presumes a configuration in which a medium surface provided with a dot pattern reflects infrared rays, and each of dots composing the dot pattern does not reflect infrared rays or a configuration in which a medium surface does not reflect infrared rays, and each of the dots reflects infrared rays.
  • UV ultraviolet
  • the mouse function may be implemented by a configuration of an optical mouse illustrated in Fig. 3 (c) .
  • the dot pattern reading unit 10 and a movement amount/direction detection unit 20b serving as an optical reading unit may be combined into one unit.
  • Fig. 3 (c) illustrates details of the movement amount/direction detection unit 20b (optical reading unit) with a mouse function made optical.
  • the movement amount/direction detection unit 20b includes an LED 11b, a prism 17, a reading hole 12b, a lens 13b, a sensor 15b, and a PCB 16b.
  • the dot pattern reading unit 10 and the movement amount/direction detection unit 20b can be combined into one unit by combining the IR-LED 11 and the LED 11b, combining the lens 13 and the lens 13b, and combining the CMOS sensor 15 and the sensor 15b.
  • the number of components can be reduced by combining the units.
  • Fig. 1 illustrates a relationship between a predetermined position designated by the target 50 (position designation means) and a position of the reading hole 12 read by the dot pattern reading unit 10.
  • Fig. 1 (a) illustrates a positional relationship between the target 50 and the reading hole 12 when the mouse 1 is viewed from the top
  • Fig. 1 (b) illustrates a relationship between a direction of the dot pattern 6 on a medium surface imaged by the CMOS sensor 15 and a direction of the mouse 1.
  • the dot pattern 6 at a position of an imaging center at the bottom of the mouse 1 is actually read while viewing the position designated by the target 50, and the position designated by the target 5 is found by calculation from XY coordinate values of the read dot pattern 6 and the direction of the dot pattern 6.
  • the dot pattern 6 used in the present embodiment has directivity, as described below.
  • the direction of the dot pattern 6 is an upward direction.
  • a direction of the mouse 1 is a direction in which a frame buffer of a captured image 99 is directed upward when the dot pattern 6 is imaged, for example, and may be previously determined.
  • a distance d between the position of the imaging center in the reading hole 12 and the position of the target 50 is determined as a value specific to the mouse 1 because the position of the target 50 and a position of the reading hole 12 are fixed.
  • An angle between a direction of the dot pattern 6 and a direction of the mouse 1 is a mouse rotational angle ⁇ .
  • the mouse rotational angle has a counterclockwise direction as its positive direction.
  • the direction of the dot pattern 6 is first found by analyzing arrangement positions of dots composing the dot pattern 6 included in the captured image 99 obtained by the CMOS sensor 15.
  • the mouse rotational angle ⁇ can be then found based on the found direction of the dot pattern 6 and the direction of the mouse 1.
  • GRID 1 An example of the dot pattern 6 (hereinafter referred to as GRID 1) used in the present embodiment will be described with reference to Figs. 4 to 9 .
  • An example of another dot pattern 6b (hereinafter referred to as GRID 5) will be described with reference to Fig. 10 .
  • grid lines in longitudinal, lateral, and oblique directions are attached for convenience of illustration, and do not exist on an actual printing surface.
  • Fig. 4 illustrates constituent elements of the dot pattern 6 and their positional relationship.
  • the dot pattern 6 includes key dots 71, information dots 72, and reference point dots 73.
  • the dot pattern 6 is generated by arranging fine dots, i.e., the key dots 71, the information dots 72, and the reference point dots 73 according to a predetermined rule to recognize numerical information by a dot code generation algorithm.
  • a block of the dot pattern 6 representing information has 5 ⁇ 5 reference point dots 73 arranged therein using the key dots 71 as a basis and has information dots 72 each arranged around a virtual reference point at the center surrounded by the four reference point dots 73. Any numerical information is defined in the block.
  • Fig. 4 illustrates a state where four blocks (in a heavy-line frame) of the dot pattern 6 are arranged in a line. Needless to say, the dot pattern 6 is not limited to the four blocks.
  • the key dots 71 are arranged by being respectively shifted in a predetermined direction from the four reference point dots 73 at four corners of the block, as illustrated in Fig. 4 .
  • the key dots 71 are representative points of the dot pattern 6 corresponding to one block including the information dots 72.
  • the key dots 71 are shifted by 0.1 mm upward from the reference point dots 73 at the four corners of the block of the dot pattern 6.
  • this numerical value is not limited to this, and can be varied depending on whether the block of the dot pattern 6 is large or small.
  • the key dot 71 may desirably be shifted by approximately 20 % of grid spacing to avoid being falsely recognized as the reference point dot 73 and the information dot 72.
  • the information dot 72 is a dot for recognizing various types of information. With the center of a grid surrounded by the four reference point dots 73 used as a virtual reference point, the information dot 72 is arranged at a final point represented by a vector using the virtual reference point as a starting point.
  • a distance between the information dot 72 and the virtual reference point surrounded by the four reference point dots 73 may desirably be approximately 15 to 30 % of a distance between the adjacent virtual reference points. If the distance between the information dot 72 and the virtual reference point is closer than this distance between the adjacent virtual reference points, the dots are easy to visually recognize as a large mass, which is visually undesirable as the dot pattern 6. Conversely, if the distance between the information dot 72 and the virtual reference point is farther than this distance between the adjacent virtual reference points, it becomes difficult to recognize whether the information dot 72 has vector directivity using either one of the adjacent virtual reference points as a starting point.
  • the key dots 71, the information dots 72, and the reference point dots 73 may desirably be printed using invisible ink or carbon ink that absorbs infrared rays when the scanner reads dots by irradiation with the infrared rays.
  • a distance between the reference point dots 73 (i.e., the size of a grid) may be approximately 0.5 mm. In the case of offset printing, the distance may be a minimum of approximately 0.3 mm.
  • the distance between the reference point dots 73 may be approximately several micrometers. If a design rule in a unit of nanometers is used, the dot pattern 6 which has more minute distance between dots can be formed.
  • the distance between the reference point dots 73 may be any value depending on uses of the dot pattern 6 if it is the above-mentioned minimum value or more.
  • the respective diameters of the key dot 71, the information dot 72, and the reference point dot 73 may desirably be approximately 10 % of the distance between the reference point dots 73.
  • Figs. 5 and 6 illustrate an example of an information definition method by a method for arranging the information dot 72.
  • Figs. 5 and 6 are enlarged views illustrating a position of the information dot 72 and an example of bit display of information defined by the position.
  • Fig. 5 (a) illustrates an example of a definition method in which an information dot 72 is shifted by a distance (e.g., 0.1 mm) from a virtual reference point 74 so as to have a direction and a length represented by a vector, and is rotated through 45 degrees in a clockwise direction, to arrange information dots 72 in eight directions so that 3-bit information is represented.
  • the dot pattern 6 includes 16 information dots 72 per block so that information composed of 48 bits (3 bits ⁇ 16) can be represented.
  • Fig. 5 (b) illustrates an example of a method for defining an information dot 72 having 2-bit information for each grid in the dot pattern 6.
  • the information dot 72 is shifted from a virtual reference point 74 in a plus (+) direction and an oblique ( ⁇ ) direction, to define 2-bit information for the information dot 72.
  • data composed of 32 bits (2 bits ⁇ 16 grids) can be applied by dividing one block into grids to be shifted in a plus (+) direction and grids to be shifted in an oblique ( ⁇ ) direction depending on uses, unlike in the definition method illustrated in Fig. 5 (a) (in which 48-bit information can originally be defined).
  • Fig. 6 illustrates an example of a method for defining information in another method for arranging the information dots 72.
  • this definition method when the information dot 72 is arranged, amounts of shift from the virtual reference point 74 surrounded by the reference point dots 73 are of two types; large and small shift amounts, and the number of vector directions is eight. Therefore, 16 types of arrangements can be defined, and 4-bit information can be represented.
  • the larger shift amount and the smaller shift amount may desirably be approximately 25 to 30 % and approximately 15 to 20 % of a distance between the adjacent virtual reference points 74, respectively. Even when directions to shift the information dots 72 by the large shift amount and the small shift amount are the same, however, the centers of the information dots 72 may desirably be spaced apart by a distance larger than the diameter of the information dots 72 so that the information dots 72 can be distinguished and recognized.
  • a method for defining 4-bit information is not limited to the above-mentioned definition method.
  • the information dots 72 can also be arranged in 16 directions to represent four bits. Needless to say, various changes can be made.
  • Fig. 7 illustrates an example of a method for defining information by a method for arranging a plurality of information dots 72 per grid.
  • Fig. 7 (a) illustrates an example in which two information dots 72 are arranged
  • Fig. 7 (b) illustrates an example in which four information dots are arranged
  • Fig. 7 (c) illustrates an example in which five information dots 72 are arranged.
  • the number of information dots 72 per grid surrounded by the four reference point dots 73 may desirably be one in consideration of appearance. If it is desired to increase an information amount by ignoring appearance, however, a large amount of information can be defined by allocating one bit per vector and representing the information using a plurality of dots as the information dots 72. In vectors in eight directions of a concentric circle, for example, 2 8 information per grid can be represented, and 2 128 information per block including 16 grids can be represented.
  • the dot pattern 6 is recognized by accepting the dot pattern 6 as image data using a scanner, first extracting the reference point dots 73, then extracting the key dots 71 because the reference point dots 73 are not in their proper positions, and then extracting the information dots 72.
  • Fig. 8 illustrates an example of a format used to extract the information dots 72 from the dot pattern 6.
  • Fig. 8 illustrates an example of a format in which grids 11 to 116 are arranged in a spiral shape in a clockwise direction from the center of a block.
  • I1 to I16 respectively represent arrangements of the grids, and respectively represent, when the number of information dots 72 included in each of the grids is one, arrangement locations of the information dots 72 in the grids.
  • Fig. 9 illustrates an example of another arrangement of grids including information dots 72.
  • Fig. 9 (a) illustrates an example in which six (2 ⁇ 3) grids are arranged in one block
  • Fig. 9 (b) illustrates an example in which nine (3 ⁇ 3) grids are arranged in one block
  • Fig. 9 (c) illustrates an example in which 12 (3 ⁇ 4) grids are arranged in one block
  • Fig. 9 (d) illustrates an example in which 36 grids are arranged in one block.
  • the number of grids included in one block is not limited to 16.
  • Various changes can be made.
  • an amount of information that can be recorded in the dot pattern 6 can be flexibly adjusted by adjusting the number of grids included in one block and the number of information dots 72 included in one grid depending on whether a required information amount is large or small or the resolution of a scanner.
  • Fig. 10 illustrates an example of the other dot pattern 6b (GRID 5).
  • Fig. 10 (a) illustrates a positional relationship among reference point dots 73a to 73e, virtual reference points 74a to 74d, and the information dots 72 in the dot pattern 6b.
  • a direction of the dot pattern 6b is defined by a shape of a block.
  • the reference point dots 73a to 73e are first arranged.
  • a shape representing a direction of the block (a pentagon directed upward) is defined by a line connecting the reference point dots 73a to 73e in this order.
  • the virtual reference points 74a to 74d are then defined based on an arrangement of the reference point dots 73a to 73e.
  • a vector having a direction and a length is then defined using each of the virtual reference points 74a to 74d as its starting point.
  • the information dot 72 is arranged at a final point of the vector.
  • the direction of the block can thus be defined by a way for arranging the reference point dots 73a to 73e.
  • the direction of the block is defined so that the size of the whole block is also be defined.
  • Fig. 10 (b) illustrates an example in which information is defined depending on whether the information dot 72 exists on each of the virtual reference points 74a to 74d in the block.
  • Fig. 10 (c) illustrates an example in which blocks in the GRID 5 are connected two by two in each of longitudinal and lateral directions.
  • a direction in which the blocks are connected and arranged is not limited to the longitudinal and lateral directions.
  • the blocks may be arranged and connected in any direction.
  • the reference point dots 73a to 73e and the information dot 72 all have the same shape in Fig. 10
  • the reference point dots 73a to 73e and the information dot 72 may respectively have different shapes.
  • the reference point dots 73a to 73e may have shapes larger than that of the information dot 72.
  • the reference point dots 73a to 73e and the information dot 72 may have any shape if they can be identified, for example, a circular, triangular, square, or polygonal shape.
  • the dot code is information recorded in the dot pattern 6.
  • Fig. 11 illustrates an example of a format of information bits in one block of the dot pattern 6.
  • 2-bit information is recorded per grid.
  • bits C 0 and C 1 are defined in a manner that uses the bit C 1 as an upper bit.
  • the two bits are collectively indicated as C 1-0 .
  • the bits may be recorded by one information dot 72 per grid, or may be recorded by a plurality of information dots 72 per grid.
  • Fig. 12 illustrates an example of a format of a dot code.
  • the dot code has a length corresponding to 32 bits, and is represented by bits C 0 to C 31 .
  • Fig. 12 (a) illustrates an example of a format in which a dot code includes XY coordinate values, a code value, and a parity
  • Fig. 12 (b) illustrates an example in which the format is changed depending on a place where the dot pattern 6 is provided
  • Fig. 12 (c) illustrates an example of a format in which a dot code includes XY coordinate values and a parity.
  • an X-coordinate value and a Y-coordinate value of a position where the dot pattern 6 is provided are represented, respectively, using eight bits C 0 to C 7 and eight bits C 8 to C 15 , respectively.
  • the code value is represented using 14 bits C 16 to C 29 .
  • the code value can be used to represent any information according to the purpose of use of the dot pattern 6.
  • the code value can be used to represent a document identification (ID).
  • two bits C 30 and C 31 are used as the parity in the dot code.
  • a method for calculating the parity may be a generally known method, and hence the description thereof is omitted.
  • the format is changed depending on a place where the dot pattern 6 is provided.
  • the place where the dot pattern 6 is provided is partitioned into an XY coordinate area, a code value area, and an XY coordinate/code value area.
  • an XY coordinate area format is used in the XY coordinate area.
  • an XY coordinate area format is used in the code value area.
  • a code value area format is used in the XY coordinate/code value area.
  • an XY coordinate/code value area format is used.
  • an X-coordinate is represented using 14 bits C 0 to C 13
  • a Y-coordinate is represented using 14 bits C 14 to C 27
  • a code value is represented using 28 bits C 0 to C 27
  • an X-coordinate is represented using 8 bits C 0 to C 7
  • a Y-coordinate value is represented using 8 bits C 8 to C 15
  • a code value is represented using 12 bits C 16 to C 27 .
  • a bit sequence of C 29 and C 29 is considered as a use identifying bit, for example, in order to be able to distinguish which of XY coordinate values, a code value, and XY coordinate and a code value is represented by read information. It may be determined that XY coordinates are included when C 29 is one, and are not included when it is zero, and a code value is included when C 29 is one, and is not included when it is zero.
  • the use identifying bit is 10 in (1), 01 in (2), and 11 in (3) in Fig. 12 (b) .
  • a bit sequence representation rule may be determined so that bit sequences respectively representing XY coordinate and a code value do not overlap each other in order to be able to distinguish which of XY coordinate values, a code value, and XY coordinate values and a code value is represented by read information.
  • Fig. 13 is a functional block diagram of the mouse 1.
  • the mouse 1 includes a control unit 60, a sending unit 65, a dot pattern reading unit 10, a mode changeover switch, right and left buttons, a wheel detection unit 35, and a movement amount/direction detection unit 20.
  • the dot pattern reading unit 10 images a medium surface as image data.
  • the image data is sent to the control unit 60.
  • the mode changeover switch is used to switch between a mouse mode and a grid mode, and is operated by the user. This information is sent to the control unit 60. As described above, switching between the modes can be replaced with long press of a mouse button and the like. Therefore, the mode changeover switch need not necessarily be provided. When switching is performed by the user performing a keyboard operation and in response to a signal from the information processing apparatus 7 by an application, the changeover switch need not be provided either.
  • the movement amount/direction detection unit 20, the wheel detection unit 35, and a button operation detection unit 31 detect an operation performed by the user, and sends information relating to the operation to the control unit 60.
  • the control unit 60 receives image data from the dot pattern reading unit 10, and analyzes the image data. Details of an analysis procedure will be described below with reference to Fig. 14 .
  • the control unit 60 receives the operation information sent from the mode changeover switch, the movement amount/direction detection unit 20, the wheel detection unit 35, and the button operation detection unit 31 and the image data from the dot pattern reading unit 10, analyzes them, and sends a result of the analysis to the sending unit 65. Details will be described below with reference to a flowchart of Fig. 15 .
  • the control unit 60 may desirably perform control to turn off power to the dot pattern reading unit 10 or save power during a mouse mode.
  • the control unit 60 further analyzes a change of an image read per unit time by the dot pattern reading unit 10 if the dot pattern reading unit 10 functions as an optical reading unit in an optical mouse. A movement amount and a direction of the mouse 1 on a medium surface are sent to the information processing apparatus 7 based on a result of this analysis.
  • a dot pattern reading unit in the claims performs a function of an optical reading unit for detecting a movement amount and a direction of an optical mouse in addition to a function of reading a dot pattern, and a control unit also analyzes a change of an image read per unit time by the dot pattern reading unit in addition to calculating a predetermined position.
  • the dot pattern reading unit and the optical reading unit in the optical mouse can be combined into one unit so that the number of members can be reduced. This enables space saving inside the mouse.
  • a medium surface in the claims need not be provided with a dot pattern.
  • the sending unit 65 converts the information sent from the control unit 60 into an electrical signal, an infrared signal, a radio signal, or the like, and sends the signal to the information processing apparatus 7.
  • Fig. 14 illustrates a flowchart of analysis of code information.
  • the dot pattern reading unit 10 images a medium surface as image data.
  • the image data is sent to the control unit 60.
  • the control unit 60 reads the image data sent from the dot pattern reading unit 10 (S10), analyzes the image data (S20), and determines whether the image data includes a predetermined dot pattern (S30). If the image data includes the predetermined dot pattern, the control unit 60 calculates code information and a mouse rotational angle (S40). If the image data does not include the predetermined dot pattern, the processing returns to S10.
  • the control unit 60 determines whether the code information includes an active code (S50). If the code information includes the active code, the control unit 60 sends the active code to a sending unit (S50b), and the processing proceeds to S60. If the code information does not include the active code, the processing proceeds to S60.
  • the active code means a code value used in an operating system (OS) that operates by an information processing apparatus, each application, or the like, which is included in the code information.
  • OS operating system
  • the control unit 60 determines whether the code information includes XY coordinates (S60). If the code information includes the XY coordinates, the processing proceeds to S70. If the code information does not include the XY coordinates, the processing returns to S10.
  • the control unit 60 determines whether a flag for conversion into coordinates of the target 50 is set (S70). If the flag is set, the control unit 60 finds the coordinates of the target 50 (S70a), and sends the coordinates to a sending unit (S80). If the flag is not set, the control unit 60 sends coordinates of an imaging center to the sending unit (S70b). The flag is determined in advance by the user or the application.
  • the dot pattern reading unit 10 always captures image data, and sends the image data to the control unit 60, which is not illustrated.
  • the control unit 60 may perform processing using the above-mentioned analysis algorithm, or may perform analysis only in the case of the grid mode. The latter enables power saving of the mouse 1.
  • Fig. 15 illustrates a flowchart of an algorithm relating to sending of the control unit 60.
  • control unit 60 determines the current mode (S101), and selects information conforming to the mode and sends the information to the sending unit 65 (S102, S103).
  • the control unit 60 sends, out of information sent to the control unit 60, information relating to a function of a normal mouse, i.e., information relating to an operation of the right and left buttons, information relating to a wheel operation, and information relating to a relative position to the sending unit.
  • the control unit 60 sends, out of an active code, coordinates (X, Y) of the imaging center, and coordinate values (Xt, Yt) of the target 50 in addition to the information relating to an operation of the right and left buttons, the information relating to a wheel operation, and the information relating to a relative position, a signal found according to predetermined setting to the sending unit.
  • the predetermined setting is setting determined in advance as to which information is to be sent from the mouse.
  • the predetermined setting may be setting optionally performed by the user using a predetermined operation, for example.
  • the predetermined setting may be setting determined by an application installed in the information processing apparatus 7.
  • the grid mode may be subdivided into a mode using only XY coordinate defined in the dot pattern 6, a mode using only a code value, and a mode using both XY coordinate values and a code value depending on setting by the user or a program for the control device.
  • the grid mode may be implemented when the control unit selects output information conforming to each of the modes in step S103, which is not illustrated.
  • Fig. 16 illustrates various examples of position designation means.
  • Figs. 16(a) and 16 (b) are respectively figures as viewed from the top and the left side of position designation means of a type using a transparent member.
  • Figs. 16 (c) and 16(d) are respectively figures as viewed from the top and the left side of position designation means of a type provided with a square-shaped projection.
  • Figs. 16 (e) and 16 (f) are respectively figures as viewed from the top and the left side of position designation means of a type using a laser pointer 41 serving as predetermined position irradiation means.
  • a + mark and a ⁇ mark or a ⁇ mark and a • mark are provided at its center, to clarify the target 50 (position designation means).
  • a mark in the position designation means of a type using a transparent member is printed below the extension unit 40, to prevent a point from being shifted due to the thickness of the transparent member.
  • a tip end of the square-shaped projection indicates the target 50.
  • an irradiation position of a laser indicates the target 50.
  • the sending unit 65 changes information sent from the control unit 60 into an electrical signal in the case of wired connection such as universal serial bus (USB) connection, or changes the information into an infrared signal or a Bluetooth signal, and outputs the signal to the information processing apparatus 7.
  • wired connection such as universal serial bus (USB) connection
  • USB universal serial bus
  • mice 1001 according to the second embodiment is similar to the mouse 1 according to the first embodiment illustrated in Fig. 2 , and hence the description is not omitted.
  • Fig. 17 illustrates an example of a configuration of the mouse 1001.
  • Fig. 17(a) illustrates the mouse 1001 as viewed from the side
  • Fig. 17 (b) illustrates the mouse 1001 as viewed from the top
  • Fig. 17 (c) is a cross-sectional view of the mouse 1001 having an optical mouse function.
  • a prism 1080 including a dot pattern input unit is arranged to project outward at the front of a casing of the mouse 1001.
  • the prism 1080 including the dot pattern input unit has a shape projecting by approximately 5 mm forward from a main body of the mouse 1001.
  • a target mark 1081 having infrared permeability is provided on an upper surface of the prism 1080 including the dot pattern input unit.
  • the target mark 1081 is used, when a user designates a particular position using the mouse 1001, to accurately match a position of the mouse 1001 with the particular position by viewing.
  • the mouse 1001 includes a movement amount/direction detection unit 1020 serving as an optical reading unit 1020, a button operation detection unit 1030, a wheel operation detection unit 1035, a control unit 1060, and a sending unit 1065 to implement a normal mouse function.
  • a function of each of the units for implementing the mouse function is similar to that in a normal mouse, and hence the description thereof is not omitted.
  • the mouse 1001 may further include a dot pattern reading unit 1010, a prism 1080 including a dot pattern input unit, and a target 1081, which are used in a grid mode.
  • the dot pattern reading unit 1010 similar to the above-mentioned dot pattern reading unit 10, is transversely arranged. Its configuration is similar to that illustrated in Fig 3 (b) , and hence the description thereof is not omitted.
  • An image captured by a CMOS sensor is an image that has been totally reflected once on an inner surface of the prism 1080 including the dot pattern input unit, as described below. Therefore, an analysis algorithm performs mirror image processing.
  • mode switching is performed by long press of right and left buttons in the mouse 1001, for example, and a dedicated switch is not provided.
  • the movement amount/direction detection unit 1020 serving as an optical reading unit includes at least an LED 1011, a prism 1017, a reading hole 1012, a lens 1013, a sensor 1015, and a PCB 1016.
  • the dot pattern reading unit 1010 and the movement amount/direction detection unit 1020 serving as an optical reading unit may be combined into one unit, like those in the first embodiment.
  • the dot pattern reading unit 1010 and the movement amount/direction detection unit 1020 may be combined into one unit by combining the IR-LED 1011 and an LED 1011b, combining a lens 13 and the lens 1013, and combining a CMOS sensor 15 and the sensor 1015, for example.
  • the number of components can be reduced by combining the units.
  • Fig. 18 illustrates respective positions of the dot pattern reading unit 1010, the prism 1080 including the dot pattern input unit, and the IR-LED 1011.
  • the dot pattern reading unit 1010 is transversely arranged to capture an image totally reflected on the inner surface of the prism 1080 including the dot pattern input unit.
  • ⁇ illustrated in Fig. 18 is required to exceed a critical angle specific to a material for the prism.
  • An angle of the prism 1080 including the dot pattern input unit and a position of the dot pattern reading unit 1010 are required to be determined to satisfy this condition.
  • ⁇ is required to be larger than approximately 43 degrees when the material for the prism is glass, approximately 42 degrees when it is acryl, and approximately 39 degrees when it is polycarbonate.
  • the prism 1080 including the dot pattern input unit is arranged so that its tip end is positioned vertically just above an imaging center, for example. In such a configuration, the prism 1080 including the dot pattern input unit can double as position designation means.
  • the prism 1080 including the dot pattern input unit may be provided with the target 1081.
  • the IR-LED 1011 is arranged so that the whole range of a reading position can be sufficiently irradiated therewith.
  • a dot pattern is similar to that in the first embodiment, and hence the description thereof is not omitted.
  • Fig. 19 is an arrangement plan of an arrangement, different from that described above, of positions of the dot pattern reading unit 1010, the prism 1080, and the IR-LED 1011.
  • Fig. 19 (a) illustrates a mouse of a type in which the position of the IR-LED 1011 is changed into a lower position
  • Fig. 19 (b) illustrates a mouse of a type in which a reading position is pointed to by a laser beam using a laser pointer 1082
  • Fig. 19 (c) illustrates the mouse illustrated in Fig. 19 (b) as viewed from the top
  • Fig. 19 (d) illustrates a mouse of a type in which a laser pointer 1082 and the IR-LED 1011 are respectively arranged above and below the dot pattern reading unit 1010.
  • the IR-LED 1011 can be arranged below the dot pattern reading unit 1010 by totally reflecting infrared light irradiated from the IR-LED 1011 and irradiating an imaging range with the infrared light.
  • an arrangement position of the IR-LED 1011 can be freely designed.
  • the laser pointer 1082 can be used as means representing the reading position.
  • the dot pattern reading unit 1010, the laser pointer 1082, and the IR-LED 1011 are required to be arranged not to overlap one another. Therefore, as illustrated in Fig. 19 (c) , the laser pointer 1082 and the IR-LED 1011 are arranged, respectively, in spaces on the right side and the left side of the dot pattern reading unit 1010 not to overlap each other.
  • the laser pointer 1082 and the IR-LED 1011 can also be arranged, respectively, above and below the dot pattern reading unit 1010.
  • the IR-LED 1011 can be arranged below the prism 1080 by totally reflecting infrared light irradiated therefrom.
  • the laser beam irradiated from the laser pointer 1082 can be totally reflected on the inner surface of the prism 1080 to point to the reading position, which is not illustrated.
  • a functional block diagram is similar to the functional block diagram illustrated in Fig. 13 , and hence the description thereof is not omitted.
  • Fig. 20 illustrates a flowchart of algorithms for image data analysis and code information analysis.
  • the dot pattern reading unit 1010 images a medium surface as image data when the mouse 1001 is in the grid mode.
  • the image data is sent to the control unit 1060.
  • the control unit 1060 reads the image data sent from the dot pattern reading unit 1010 (S1010 analyses the image data (S1020), and determines whether the image data includes a predetermined dot pattern (S1030). If the image data includes the predetermined dot pattern, the control unit 1060 calculates code information (S1040). If the image data does not include the predetermined dot pattern, the processing returns to S1010.
  • the control unit 1060 determines whether the code information includes an active code (S1050). If the code information includes the active code, the control unit 1060 sends the active code to a sending unit (S1050b), and the processing proceeds to S1060. If the code information does not include the active code, the processing directly proceeds to S160.
  • the control unit 1060 determines whether the code information includes XY coordinates (S1060). If the code information includes the XY coordinates, the processing proceeds to step S1070. In S1070, the control unit 1060 sends coordinates of an imaging center to the sending unit. If the code information does not include the XY coordinates, the processing returns to S1010.
  • Fig. 21 illustrates a flowchart of an algorithm relating to sending of the control unit 1060.
  • control unit 1060 determines the current mode, selects information conforming to the mode, and sends the information to the sending unit 1065.
  • control unit 1060 sends, out of information sent to the control unit 1060, information relating to a function of a normal mouse, i.e., information relating to an operation of the right and left buttons, information relating to a wheel operation, and information relating to a relative position to the sending unit.
  • control unit 1060 sends, out of an active code and coordinates (X, Y) of the imaging center in addition to the information relating to an operation of right and left buttons, the information relating to a wheel operation, and the information relating to a relative position, a signal found according to predetermined setting to the sending unit.
  • the predetermined setting is setting determined in advance as to which information is to be sent from the mouse.
  • the predetermined setting may be setting optionally performed by the user using a predetermined operation, for example.
  • the predetermined setting may be setting determined by an application installed in the information processing apparatus 7.
  • the functional block diagram is similar to that in the first embodiment, and hence the description thereof is not omitted.
  • the prism 1080 need not necessarily be provided at the front of a mouse, as illustrated in Fig. 17 .
  • the prism 1080 may be arranged in a position spaced slightly leftward for a right-handed user, may be arranged in a position spaced slightly rightward for a left-handed user, or may be designed to be switchable between the right and left positions.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)
EP09825939.3A 2008-11-14 2009-11-16 Mit einer punktmusterlesefunktion ausgestattete maus Withdrawn EP2367093A4 (de)

Applications Claiming Priority (2)

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JP2008292837A JP4291405B1 (ja) 2008-11-14 2008-11-14 ドットパターン読み取り機能を備えたマウス
PCT/JP2009/006108 WO2010055686A1 (ja) 2008-11-14 2009-11-16 ドットパターン読み取り機能を備えたマウス

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WO2010055686A1 (ja) 2010-05-20
CN103902060A (zh) 2014-07-02
KR101152724B1 (ko) 2012-06-15
EP2367093A4 (de) 2014-10-29
JP4291405B1 (ja) 2009-07-08
CN102216881B (zh) 2014-05-07
KR20110084943A (ko) 2011-07-26
CN102216881A (zh) 2011-10-12
US20110304548A1 (en) 2011-12-15

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